Diskless boot with onboard NIC

I am considering using some inexpensive mother boards as part of a cluster
project. These boards (ECS K7AMA) use the
RealTek 8139C LAN chip on board the motherboard. They claim it supports
"Lan card wake-up" . I have seen some Linux drivers for this chip on the
Scyld site.
My questions are:
Is it possible to do a diskless boot without a floppy? I would prefer a
etherboot from another system.
Do you know it you have to burn an EPROM and do these integrated Lan cards
even support EPROM's?
Thanks,
Jim Fraser